The Trialogue Business in Society Handbook 2024 (27th edition) is focused on the them ‘Collaborating for change’. In a world where complex problems require new ways of thinking about solutions, the Handbook explores various aspects of collaboration, including various models of collaboration, the state of collaboration in the corporate and nonprofit sectors and successful collaborative initiatives which are driving change. It also reflects a stronger research focus, presenting not only the findings of our extensive primary research with companies and nonprofit organisations, but also a round-up of relevant local and global research on development and responsible business.